[Bug 768248] vaapiencode: Add Encoding region-of-interest (ROI) support

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=768248

--- Comment #78 from Víctor Manuel Jáquez Leal <vjaquez at igalia.com> ---
(In reply to Nicolas Dufresne (stormer) from comment #77)
> I think that the ROI seems to get lost along the way in:
> 
> gst-launch-1.0 -e v4l2src ! videoconvert ! facedetect
> profile=haarcascade_frontalface_default.xml ! videoconvert ! queue !
> vaapipostproc ! vaapih264enc default-roi-delta-qp=10 rate-control=cbr
> bitrate=512 ! ...
> 
> like if "plugins: copy input buffer metas" had no effect.

Did you check with vadumpcaps if your driver/backend supports roi with h264??

In my kabylake it doesn't, but it does for h265

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